VPP Series – Continuous Shot Blasting Machine with Overhead Conveyor
Similar to inline conveyor shot blasters, continuous shot blasters with overhead conveyor can accommodate even more complex parts. Parts can travel through the blasting area in a batch positioned on a hook or tree fixture or one by one. When all surfaces must be blasted, monorail systems offer an efficient alternative to manual blast for large-volume applications.
Continuous shot blasters with overhead conveyor are typically designed to process welded constructions of complicated forms, manufactured in small or medium series in continuous flow production. It can be used for continuous blast cleaning surfaces, removing foundry sand and cores, and for removing scale and rust in the foundry industry, as well as for component restoration and reconditioning in the metalworking industry.
This process is ideal for heavy and complex-shaped workpieces like castings, welded components, forged and pressed parts, cold or hot formed, and complicated parts such as cylinders, springs, etc.
VPP Series shot blasters can easily be integrated in continuous flow production with monorail and hangers moving parts from one station to another.
The conveyor is able to carry parts load ranging from 55 to 2,200 lb or more. The housing size, load capacity, type and course of the hanging rail, and blast wheels number, horsepower and position as well as frequency regulation of blast wheel’s revolutions are based on the process requirements.
How it Works
Parts can be hung individually or in a cluster on hooks fixed on overhead conveyor that goes through the shot blasting chamber.
Inside the blasting chamber, parts rotate and are exposed to the abrasive propelled by the ir [email protected] multi-option blast wheels ranging from 5.5 to 30 kW, providing efficient shot blasting and quick results.
The number, location, power, and angles at which the blast wheels are installed, as well as the traveling speed of the conveyor are determined by the process requirements in order to provide the most efficient blasting process.
Abrasive media reclaiming system
After use, residual abrasive media falls down the bottom of the blasting chamber, where it is conveyed by screw conveyors and a bucket elevator to an automatic media cleaner.
The abrasive reclaimer provides continuous handling and recycling of abrasive media based on particle size in order to maintain optimal and consistent quality blasting.
For heavily regulated applications, a magnetic and/or vibratory particle separator can be added to precisely sort the abrasive shots based on their size and density.
All shot blasters are equipped with PLC, display, timer, automatic or manual mode, automatic start-up of the blast wheels, working-hours counter, and other basic features.
Blast wheels and blasting chamber inner walls are protected by wear-resistant shields made from manganese steel liners for extremely long service life.
The blasting chamber is sealed with several lines of rubber curtains on both ends, which ensure abrasive media is kept inside.
Blast wheels can be equipped with a frequency drive and ir [email protected] valve to precisely control the flow of media for optimal results.
Transport of workpieces can be performed by Morris chain, Power & Free conveyor or conveyor with trolleys.